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Security update for Linux kernel

Knowledgebase

(Last modified: 16MAY2006)


solutions Security update for Linux kernel SuSE Linux Maintenance Web (308356dbd7f8c72f2c66dad286c511f9)

Applies to

Package: k_deflt
kernel-source
Product(s): SuSE Linux Enterprise Server 8 for IBM S/390 and IBM zSeries
Patch: patch-10999
Release: 20060516
Obsoletes: 908e2fc1ed6e9f52170be50afeb252e7

Indications

Everyone using the Linux Kernel should update.

Contraindications

None.

Problem description

This kernel update fixes several security problems:
  • CVE-2006-1524: shmat: stop mprotect from giving write permission to a readonly shared memory attachment.
  • CVE-2006-1864: Due to incorrect argument checking it was possible to break out of chroots on smbfs filesystems.
  • CVE-2006-1342: A minor information leak in SO_ORIGINAL_DST was fixed.
  • CVE-2005-4798: Creation of long symlinks on the NFS server could crash the client machine.
  • CVE-2006-1056: i386/x86-64: Fix AMD x87 information leak between processes.
  • CVE-2006-0741: x86_64 only: Always check that RIPs are canonical during signal handling, otherwise local attackers could crash the machine.
  • CVE-2006-0742: IA64 only: Don't declare die_if_kernel as noreturn, otherwise local attackers can crash the machine.
Additional following bugs were fixed:
  • reiserfs: don't BUG() in panic
  • nfs client: handle long symlinks properly
  • PowerPC64: sys_rt_sig return should return a long instead of int.
  • SCSI-Tape driver: Zero-initialize scatter-gather list to avoid BUGs.
  • IA64: don't declare die_if_kernel as noreturn
Additional Infos for kernel (s390 specific)
Patchcluster 32
  • Problem-ID: 20475 - kernel: magic sysrq-t addressing exception.
  • Problem-ID: 17612 - lcs: LCS device drops too many packets on a flood ping
Patchcluster 33
  • Problem-ID: 23074 - kernel: Missing error check on signal frame setup.
  • Problem-ID: 23074 - kernel: Bug in setup_rt_frame().
  • Problem-ID: 22497 - kernel: Make cmm related proc entries world readable.
  • Problem-ID: 23355 - kernel: Signal handling bug.
  • Problem-ID: 22524 - qeth: Layer2 VLAN fails to ping.
  • Problem-ID: 22773 - z90crypt: Analysis revealed a possible memory overlay.
  • Problem-ID: 22772 - z90crypt: Analysis revealed unreachable code.
For further description of the named Problem-IDs, please look at http://www-128.ibm.com/developerworks/linux/linux390/overview24.html

Solution

Please install the updates provided at the location noted below.

Installation notes

This update is provided as an RPM package that can easily be installed onto a running system by using these commands:
rpm -Fvh k_deflt.rpm zipl
Finally, reboot the system with
shutdown -r now
To load the new kernel (replace "now" with the appropriate amount of time to allow local users to cleanly log out, for example "+5" for five minutes.)

links to download packages

Download Source Packages

Download the source code of the patches for maintained products.


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